👉 Subhumeral is a medical term that refers to a portion of the body that lies below the level of the sternum, or the highest point where the ribs meet. In other words, it's the part of the chest that is not fully covered by the breastbone and does not extend beyond the midline of the rib cage. Subhumeral bone is typically found in the upper part of the rib cage, including the costal cartilage and the superior mesenteric artery. This area